Amazon floodplain hydrology and implications for aquatic conservation

Amazon floodplain hydrology and implications for aquatic conservation
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亚马逊洪泛区水文学及其对水生保护的影响

DOI:
10.1002/aqc.3558
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发表时间:
2020
期刊:
Aquatic conservation
影响因子:
--
通讯作者:
Coe, MT
Coe, MT
中科院分区:
--
文献类型:
--
作者:
Melack, JM;Coe, MT

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水生栖息地径流和淹没的幅度、持续时间、频率和可预测性是与水生生态系统功能和生物多样性相关的关键水文特征,但它们很少被纳入亚马逊河漫滩生态分析。洪泛区水文的遥感方法、测量和建模为这种整合提供了基础。保护洪泛平原和其他湿地的有效立法取决于需要应用水文数据的业务定义。被淹地区的范围和变化与鱼类多样性以及被淹森林和漂浮植物的存在和生长有关。大坝建设降低了河流系统的连通性,改变了洪水脉冲,对适应和依赖自然洪水状态的洪泛区生态系统产生了重大负面影响。气候的趋势和变化加上森林砍伐正在改变亚马逊的水文循环,导致流量和淹没面积的变化,并伴随生态影响。
The amplitude, duration, frequency, and predictability of runoff and inundation of aquatic habitats are key hydrological characteristics linked to aquatic ecosystem functioning and biodiversity, but they are seldom integrated into analyses of Amazon floodplain ecology. Remote sensing approaches, measurements and modelling of floodplain hydrology provide a basis for this integration.Effective legislation to protect floodplains and other wetlands depends on operational definitions that require application of hydrological data.Extent and changes of flooded areas are linked to fish diversity and to presence and growth of flooded forests and floating plants.Dam construction reduces river system connectivity and modifies the flood pulse, with major negative implications for floodplain ecosystems adapted to and dependent on a natural flood regime.Trends and variability in climate plus deforestation are altering the Amazon's hydrological cycle, causing changes in discharge and flooded area with concomitant ecological impacts.
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